Tornado producing supercell Pennsylvania

Wave-like cloud formation appears below a supercell thunderstorm in Texas

Funnel cloud caught rotating over Lebanon, Pennsylvania

Small Funnel Cloud Spotted in Tornado-Warned Sac City, Iowa

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel Cloud Spotted in Tornado-Warned Phenix City

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel cloud: A spectacular tornado leaves villagers in shock in France

Double Tornado Funnel Clouds Tear Through Iowa

Eerie funnel clouds appear overhead in wake of possible tornado

Funnel Cloud Spotted in Tornado-Warned Rocklake, North Dakota

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel Cloud Touches Down in Central Texas Amid Tornado Warnings

Funnel Cloud Trying To Grow Up To Be A Tornado

Funnel clouds and possible tornados spotted in Nebraska

Stunning video of tornado-like funnel cloud, spotted in the Channel Islands